import { constantRoutes } from "@/router";
import Layout from "@/layout/index";
import ParentView from "@/components/ParentView";
import InnerLink from "@/layout/components/InnerLink";
const permission = {
  state: {
    routes: [
    ],
    addRoutes: [],
    defaultRoutes: [],
    topbarRouters: [
      {
        path: "/",
        meta: { title: "企业知识库", icon: "dashboard" },
        children: [
          {
            path: "index",
            component: () => import("@/views/index"),
            meta: { title: "企业知识库" },
          },
        ],
      },
      {
        path: "/repository",
        meta: { title: "业务模块", icon: "dashboard" },
        children: [
          {
            path: "/proModule",
            component: () => import("@/views/repository/proModule"),
            meta: { title: "业务模块" },
          },
        ],
      },
      {
        path: "/system",
        meta: { title: "系统管理", icon: "dashboard" },
        children: [
          {
            path: "/menu",
            component: () => import("@/views/system/menu"),
            meta: { title: "菜单管理" },
          },
          {
            path: "/role",
            component: () => import("@/views/system/role"),
            meta: { title: "角色管理" },
          },
        ],
      },
    ],
    sidebarRouters: [],
  },
  mutations: {
    SET_ROUTES: (state, routes) => {
      state.addRoutes = routes;
      state.routes = constantRoutes.concat(routes);
    },
    SET_DEFAULT_ROUTES: (state, routes) => {
      state.defaultRoutes = constantRoutes.concat(routes);
    },
    SET_TOPBAR_ROUTES: (state, routes) => {
      // 顶部导航菜单默认添加统计报表栏指向首页
      // const index = [{
      //   path: 'index',
      //   meta: { title: '统计报表', icon: 'dashboard'}
      // }]
      // state.topbarRouters = routes.concat(index);
      state.topbarRouters = routes;
    },
    SET_SIDEBAR_ROUTERS: (state, routes) => {
      state.sidebarRouters = routes;
    },
  },
  actions: {
    // 生成路由
    GenerateRoutes({ commit, getters }) {
      return new Promise((resolve) => {
        let res = getters.resourceTree;
        let data = res && res.children;
        if (data) {
          // 过滤树节点
          function assemble(tree) {
            var newArr = [];
            for (var i = 0; i < tree.length; i++) {
              var item = { ...tree[i], titleName: tree[i].name };
              if (item.type == 3) {
                tree.splice(i--, 1);
              } else {
                if (item.children) {
                  item.children = assemble(item.children);
                }
                newArr.push(item);
              }
            }
            return newArr;
          }
          let result = assemble(data);
          const sdata = JSON.parse(JSON.stringify(result));
          const rdata = JSON.parse(JSON.stringify(result));
          const sidebarRoutes = filterAsyncRouter(sdata);
          const rewriteRoutes = filterAsyncRouter(rdata, false, true);
          rewriteRoutes.push({ path: "*", redirect: "/404", hidden: true });
          commit("SET_ROUTES", rewriteRoutes);
          commit("SET_SIDEBAR_ROUTERS", constantRoutes.concat(sidebarRoutes));
          commit("SET_DEFAULT_ROUTES", sidebarRoutes);
          commit("SET_TOPBAR_ROUTES", sidebarRoutes);
          resolve(rewriteRoutes);
        } else {
          const rewriteRoutes = [{ path: "*", redirect: "/404", hidden: true }];
          resolve(rewriteRoutes);
        }
      });
    },
  },
};

// 遍历后台传来的路由字符串，转换为组件对象
function filterAsyncRouter(asyncRouterMap, lastRouter = false, type = false) {
  return asyncRouterMap.filter((route) => {
    if (type && route.children) {
      route.children = filterChildren(route.children);
    }
    if (route.component) {
      // Layout ParentView 组件特殊处理
      if (route.component === "Layout") {
        route.component = Layout;
      } else if (route.component === "ParentView") {
        route.component = ParentView;
      } else if (route.component === "InnerLink") {
        route.component = InnerLink;
      } else {
        if (route.type == 2) {
          route.component = loadView(route.component);
        }
      }
    } else {
      route.component = ParentView;
    }
    if (
      route.children != null &&
      route.children &&
      route.children.length &&
      route.children[0].type != 3
    ) {
      route.children = filterAsyncRouter(route.children, route, type);
    } else {
      delete route["children"];
      delete route["redirect"];
    }
    route.hidden = route.hide;
    route.meta = {
      id: route.id,
      icon: route.icon,
      title: route.name,
      iconType: route.iconType,
    };
    route.name = route.path
      .split("/")
      .map((e) => e.slice(0, 1).toUpperCase() + e.slice(1))
      .join("");
    return true;
  });
}

function filterChildren(childrenMap, lastRouter = false) {
  var children = [];
  childrenMap.forEach((el, index) => {
    if (el.children && el.children.length) {
      // if (el.type == 2 && !lastRouter) {
      //   el.children.forEach((c) => {
      //     c.path = el.path + '/' + c.path
      //     if (c.children && c.children.length) {
      //       children = children.concat(filterChildren(c.children, c))
      //       return
      //     }
      //     children.push(c)
      //   })
      //   return
      // }
      // }
      if (el.component !== "Layout" && !lastRouter) {
        el.children.forEach((c) => {
          c.path = c.path;
          if (c.children && c.children.length) {
            children = children.concat(filterChildren(c.children, c));
            return;
          }
          children.push(c);
        });
        return;
      }
    }
    if (lastRouter) {
      el.path = el.path;
      // el.path = lastRouter.path + '/' + el.path
    }
    el.meta = {
      icon: el.icon,
      title: el.name,
      iconType: el.iconType,
    };

    el.hidden = el.hide;
    children = children.concat(el);
  });
  return children;
}

export const loadView = (view) => {
  if (
    process.env.NODE_ENV === "development" ||
    process.env.NODE_ENV === "staging"
  ) {
    return (resolve) => require([`@/views${view}.vue`], resolve);
  } else {
    // 使用 import 实现生产环境的路由懒加载
    return () => import(`@/views${view}.vue`);
  }
};

export default permission;
